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One end of a brass bar is maintained at 300°C, while the other end is kept at a constant but lower temperature. The cross-sectional area of the bar is 5.0 10-4 m2. Because of insulation, there is negligible heat loss through the sides of the bar. Heat flows through the bar, however, at the rate of 2.6 J/s. What is the temperature of the bar at a point 0.15 m from the hot end?
A circular coil enclosing an area of 140 cm2 is made of 190 turns of copper wire. The wire making up the coil has resistance of 3.0 Ohms, what is the average current in the coil during that time
An archer wishes to shoot an arrow at a target at eye level a distance of 60.0 m away. what angle should the arrow make with the horizontal as it is being shot
Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength 1.50 µm. Find the peak magnetic field strength
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. How fast are the waves traveling
An RLC circuit of a 2 picoF capacitor, a 4.4 ohm resistor, Find the phase shift in radians between the current and the driving voltage
A 60.0-kg runner expends 325 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
Makeshift child's swing: Child's weight, magnitude of force, maximum angle, A makeshift swing is constructed by making a loop in one end of a rope and tying the other end to a tree limb.
The frequency of light reaching Earth from a particular galaxy is 16% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
Each second, a nuclear power plant generates 2000 MJ of thermal energy from nuclear reactions in the reactor's core. What is the maximum possible thermal efficiency of the power plant
A small metal ball with a mass of 6.19 g and a charge of 6.15 mC is located at a distance of 0.67 m above the ground in an electric field of 11.5 N/C directed to the east
A runner's kinematics are being recorded to analyze gait. At a certain moment, the absolute angle of the trunk is 80°, What is the relative hip angle
The largest apple pie ever made was rectangular in shape and had an area of 7m× 12m. Consider a parallel-plate capacitor with this area. Imagine that the capacitor is filled with air and the distance between the plates is 1mm. a.
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